Lahiri, A. <br/><br/>
A study of the problem of coking coal in India / 
A. Lahiri 
 - Dhanbad :  CFRI ,  [n.d] 
 - 56 p.  ;  29 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal<br/>Coke
<br/><br/><label>Dewey Class. No.: </label>662.72